S-91223A226 5/16"-18 x 1 1/4" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fit and reduced cross-threading risks
• Space-saving ultra-low profile head design allows installation in confined areas while maintaining high torque capability
• Secure hex drive compatibility with standard 5/32" tools for stable installation and removal without slippage
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
• Versatile fully threaded design providing uniform clamping force along the entire 1 1/4" length

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 316 Stainless Steel socket head cap screws deliver critical performance where corrosion resistance and mechanical integrity are paramount. The ultra-low profile head addresses clearance limitations in precision equipment, machinery, and marine components, while the UNC coarse threads with Class 2A fit ensure rapid assembly and vibration resistance. With 70,000 psi tensile strength, they withstand high-stress conditions in chemical processing, offshore installations, and food-grade equipment where RoHS/REACH compliance is mandatory. The combination of corrosion-resistant material and precision inch dimensions makes them ideal for OEM replacements and maintenance operations requiring reliable fully threaded fasteners.

Specification Summary & Compliance

This socket head cap screw maintains Class 2A thread fit per UNC standards with precise head diameter tolerance (-0.005" to 0.005"). Manufacturing conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The 5/16"-18 UNC coarse thread specification guarantees interchangeability with standard components, while the right-hand thread direction and fully threaded design provide consistent mechanical performance across industrial applications.